package org.gfz.frame.core.database;

import java.sql.Array;
import java.sql.Blob;
import java.sql.CallableStatement;
import java.sql.Clob;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.NClob;
import java.sql.PreparedStatement;
import java.sql.SQLClientInfoException;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.SQLXML;
import java.sql.Savepoint;
import java.sql.Statement;
import java.sql.Struct;
import java.util.Map;
import java.util.Properties;

/**
 * <一句话功能简述> <功能详细描述>
 * 
 * @author 姓名 工号
 * @version [版本号, 2013-6-22]
 * @see [相关类/方法]
 * @since [产品/模块版本]
 */
public class DBConnection implements Connection
{
    /**
     * 连接池
     */
    private ConnectionPool pool;
    
    /**
     * 连接
     */
    private Connection conn;
    
    /**
     * url
     */
    private String url;
    
    /**
     * 连接状态
     */
    private boolean isBusy;
    
    /**
     * 最后使用时间
     */
    private long lastUseTime;
    
    /**
     * <默认构造函数>
     */
    protected DBConnection(ConnectionPool pool, String url, Connection conn)
    {
        this.conn = conn;
        this.url = url;
        this.pool = pool;
    }
    
    @Override
    public void close()
        throws SQLException
    {
        // 非真正关闭连接，仅为释放连接到连接池中，并设置连接状态为空闲
        pool.releaseConn(this);
    }
    
    /**
     * <一句话功能简述>连接是否正常可用 <功能详细描述>
     * 
     * @return
     * @see [类、类#方法、类#成员]
     */
    protected boolean isValid()
    {
        return true;
    }
    
    /**
     * <一句话功能简述>为真正关闭连接对象，仅供连接池调用 <功能详细描述>
     * 
     * @throws SQLException
     * 
     * @see [类、类#方法、类#成员]
     */
    protected void closeConn()
        throws SQLException
    {
        conn.close();
    }
    
    /**
     * <一句话功能简述>获取连接状态 <功能详细描述>
     * 
     * @return
     * @see [类、类#方法、类#成员]
     */
    public boolean isBusy()
    {
        return isBusy;
    }
    
    /**
     * <一句话功能简述>设置连接状态 <功能详细描述>
     * 
     * @param isBusy
     * @see [类、类#方法、类#成员]
     */
    public void setBusy(boolean isBusy)
    {
        if (isBusy)
        {
            lastUseTime = System.currentTimeMillis();
        }
        
        this.isBusy = isBusy;
    }
    
    /**
     * <一句话功能简述>获取连接URL <功能详细描述>
     * 
     * @return
     * @see [类、类#方法、类#成员]
     */
    public String getUrl()
    {
        return url;
    }
    
    /**
     * <一句话功能简述>获取连接最后使用时间 <功能详细描述>
     * 
     * @return
     * @see [类、类#方法、类#成员]
     */
    public long getLastUseTime()
    {
        return lastUseTime;
    }
    
    @Override
    public <T> T unwrap(Class<T> iface)
        throws SQLException
    {
        return conn.unwrap(iface);
    }
    
    @Override
    public boolean isWrapperFor(Class<?> iface)
        throws SQLException
    {
        return conn.isWrapperFor(iface);
    }
    
    @Override
    public Statement createStatement()
        throws SQLException
    {
        return conn.createStatement();
    }
    
    @Override
    public PreparedStatement prepareStatement(String sql)
        throws SQLException
    {
        return conn.prepareStatement(sql);
    }
    
    @Override
    public CallableStatement prepareCall(String sql)
        throws SQLException
    {
        return conn.prepareCall(sql);
    }
    
    @Override
    public String nativeSQL(String sql)
        throws SQLException
    {
        return conn.nativeSQL(sql);
    }
    
    @Override
    public void setAutoCommit(boolean autoCommit)
        throws SQLException
    {
        conn.setAutoCommit(autoCommit);
    }
    
    @Override
    public boolean getAutoCommit()
        throws SQLException
    {
        return conn.getAutoCommit();
    }
    
    @Override
    public void commit()
        throws SQLException
    {
        conn.commit();
        
    }
    
    @Override
    public void rollback()
        throws SQLException
    {
        conn.rollback();
    }
    
    @Override
    public boolean isClosed()
        throws SQLException
    {
        return conn.isClosed();
    }
    
    @Override
    public DatabaseMetaData getMetaData()
        throws SQLException
    {
        return conn.getMetaData();
    }
    
    @Override
    public void setReadOnly(boolean readOnly)
        throws SQLException
    {
        conn.setReadOnly(readOnly);
    }
    
    @Override
    public boolean isReadOnly()
        throws SQLException
    {
        return conn.isReadOnly();
    }
    
    @Override
    public void setCatalog(String catalog)
        throws SQLException
    {
        conn.setCatalog(catalog);
    }
    
    @Override
    public String getCatalog()
        throws SQLException
    {
        return conn.getCatalog();
    }
    
    @Override
    public void setTransactionIsolation(int level)
        throws SQLException
    {
        conn.setTransactionIsolation(level);
        
    }
    
    @Override
    public int getTransactionIsolation()
        throws SQLException
    {
        return conn.getTransactionIsolation();
    }
    
    @Override
    public SQLWarning getWarnings()
        throws SQLException
    {
        return conn.getWarnings();
    }
    
    @Override
    public void clearWarnings()
        throws SQLException
    {
        conn.clearWarnings();
    }
    
    @Override
    public Statement createStatement(int resultSetType, int resultSetConcurrency)
        throws SQLException
    {
        return conn.createStatement(resultSetType, resultSetConcurrency);
    }
    
    @Override
    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency)
        throws SQLException
    {
        return conn.prepareStatement(sql, resultSetType, resultSetConcurrency);
    }
    
    @Override
    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency)
        throws SQLException
    {
        return conn.prepareCall(sql, resultSetType, resultSetConcurrency);
    }
    
    @Override
    public Map<String, Class<?>> getTypeMap()
        throws SQLException
    {
        return conn.getTypeMap();
    }
    
    @Override
    public void setTypeMap(Map<String, Class<?>> map)
        throws SQLException
    {
        conn.setTypeMap(map);
    }
    
    @Override
    public void setHoldability(int holdability)
        throws SQLException
    {
        conn.setHoldability(holdability);
    }
    
    @Override
    public int getHoldability()
        throws SQLException
    {
        return conn.getHoldability();
    }
    
    @Override
    public Savepoint setSavepoint()
        throws SQLException
    {
        return conn.setSavepoint();
    }
    
    @Override
    public Savepoint setSavepoint(String name)
        throws SQLException
    {
        return conn.setSavepoint(name);
    }
    
    @Override
    public void rollback(Savepoint savepoint)
        throws SQLException
    {
        conn.releaseSavepoint(savepoint);
    }
    
    @Override
    public void releaseSavepoint(Savepoint savepoint)
        throws SQLException
    {
        conn.releaseSavepoint(savepoint);
    }
    
    @Override
    public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability)
        throws SQLException
    {
        return conn.createStatement(resultSetType, resultSetConcurrency, resultSetHoldability);
    }
    
    @Override
    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency,
        int resultSetHoldability)
        throws SQLException
    {
        return conn.prepareStatement(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
    }
    
    @Override
    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency,
        int resultSetHoldability)
        throws SQLException
    {
        return conn.prepareCall(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
    }
    
    @Override
    public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys)
        throws SQLException
    {
        return conn.prepareStatement(sql, autoGeneratedKeys);
    }
    
    @Override
    public PreparedStatement prepareStatement(String sql, int[] columnIndexes)
        throws SQLException
    {
        return conn.prepareStatement(sql, columnIndexes);
    }
    
    @Override
    public PreparedStatement prepareStatement(String sql, String[] columnNames)
        throws SQLException
    {
        return conn.prepareStatement(sql, columnNames);
    }
    
    @Override
    public Clob createClob()
        throws SQLException
    {
        return conn.createClob();
    }
    
    @Override
    public Blob createBlob()
        throws SQLException
    {
        return conn.createBlob();
    }
    
    @Override
    public NClob createNClob()
        throws SQLException
    {
        return conn.createNClob();
    }
    
    @Override
    public SQLXML createSQLXML()
        throws SQLException
    {
        return conn.createSQLXML();
    }
    
    @Override
    public boolean isValid(int timeout)
        throws SQLException
    {
        return conn.isValid(timeout);
    }
    
    @Override
    public void setClientInfo(String name, String value)
        throws SQLClientInfoException
    {
        conn.setClientInfo(name, value);
        
    }
    
    @Override
    public void setClientInfo(Properties properties)
        throws SQLClientInfoException
    {
        conn.setClientInfo(properties);
    }
    
    @Override
    public String getClientInfo(String name)
        throws SQLException
    {
        return conn.getClientInfo(name);
    }
    
    @Override
    public Properties getClientInfo()
        throws SQLException
    {
        return conn.getClientInfo();
    }
    
    @Override
    public Array createArrayOf(String typeName, Object[] elements)
        throws SQLException
    {
        return conn.createArrayOf(typeName, elements);
    }
    
    @Override
    public Struct createStruct(String typeName, Object[] attributes)
        throws SQLException
    {
        return conn.createStruct(typeName, attributes);
    }
    
}
